ADR pictogram 4.3-Dangerous when wet
by Juhele - uploaded on April 13, 2017, 8:12 pm
Official ADR pictogram (formally, the European Agreement concerning the International Carriage of Dangerous Goods by Road (ADR)) is a 1957 United Nations treaty that governs transnational transport of hazardous materials.
Author: United Nations Economic Commission for Europe
License: Public Domain according to Wikipedia